Feature: 1. High Quality Material: The PCB board of the digital display module has the characteristics of precise wiring, clear plate circuit and easy to use. 2. LED Digital Display: The white font displayed by the module allows the user to clearly know what is being displayed, even in a dark environment. 3. Easy to Use: The module can be used after connecting to the circuit, no tedious operation is required, and the wiring process is very simple. 4. Simple Function: This digital display module is a basic 4 digit 7 segment module, the module is connected to digital I or O through 2 pins. 5. 0.56in Screen: This module has a larger screen, which can bring users a clearer display, and is a convenient and practical high quality product. Specification: Item Type: LED Digital Display Module Material: PCB Board Application: LED digital display Number of Digits: 4 digit and 7 segment Connection Module: 2 pin digital I or O Use Library: TM1637.h Voltage: 5V Color: White. Package List: 1 x Digital Dispaly Module1 x Pin Header